/********************************** (C) COPYRIGHT *******************************
* File Name          : main.c
* Author             : WCH
* Version            : V1.0.0
* Date               : 2020/04/30
* Description        : Main program body.
*******************************************************************************/
#include "debug.h"

/* I2C Mode Definition */
#define HOST_MODE   0
#define SLAVE_MODE   1

/* I2C Communication Mode Selection */
#define I2C_MODE   HOST_MODE
//#define I2C_MODE   SLAVE_MODE

/* Global define */
#define Size   7
#define RXAdderss   0x02
#define TxAdderss   0x02

/* Global Variable */
u8 TxData[Size] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 };
u8 RxData[Size];

/*******************************************************************************
* Function Name  : IIC_Init
* Description    : Initializes the IIC peripheral.
* Input          : None
* Return         : None
*******************************************************************************/
void IIC_Init( u32 bound, u16 address )
{
	GPIO_InitTypeDef GPIO_InitStructure;
	I2C_InitTypeDef I2C_InitTSturcture;

	RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE );
	GPIO_PinRemapConfig(GPIO_Remap_I2C1, ENABLE);
	RCC_APB1PeriphClockCmd( RCC_APB1Periph_I2C1, ENABLE );

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init( GPIOB, &GPIO_InitStructure );

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init( GPIOB, &GPIO_InitStructure );

	I2C_InitTSturcture.I2C_ClockSpeed = bound;
	I2C_InitTSturcture.I2C_Mode = I2C_Mode_I2C;
	I2C_InitTSturcture.I2C_DutyCycle = I2C_DutyCycle_16_9;
	I2C_InitTSturcture.I2C_OwnAddress1 = address;
	I2C_InitTSturcture.I2C_Ack = I2C_Ack_Enable;
	I2C_InitTSturcture.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_10bit;
  I2C_Init( I2C1, &I2C_InitTSturcture );

	I2C_Cmd( I2C1, ENABLE );

#if (I2C_MODE == HOST_MODE)
	I2C_AcknowledgeConfig( I2C1, ENABLE );

#endif
}

/*******************************************************************************
* Function Name  : main
* Description    : Main program.
* Input          : None
* Return         : None
*******************************************************************************/
int main(void)
{
	u8 i=0;

	Delay_Init();
	USART_Printf_Init(460800);
	printf("SystemClk:%d\r\n",SystemCoreClock);

#if (I2C_MODE == HOST_MODE)
  printf("IIC Host mode\r\n");
	IIC_Init( 80000, TxAdderss);

	while( I2C_GetFlagStatus( I2C1, I2C_FLAG_BUSY ) != RESET );

	I2C_GenerateSTART( I2C1, ENABLE );

	while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_SELECT ) );
	I2C_Send7bitAddress( I2C1, 0xF0, I2C_Direction_Transmitter );

	while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_ADDRESS10 ) );
	I2C_Send7bitAddress( I2C1, 0x02, I2C_Direction_Transmitter );

	while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ) );

	while( i<6 )
	{
		if( I2C_GetFlagStatus( I2C1, I2C_FLAG_TXE ) !=  RESET )
		{
			I2C_SendData( I2C1, TxData[i] );
			i++;
		}
	}

	while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED ) );
	I2C_GenerateSTOP( I2C1, ENABLE );

#elif (I2C_MODE == SLAVE_MODE)
	printf("IIC Slave mode\r\n");
	IIC_Init( 80000, RXAdderss);

	while( !I2C_CheckEvent( I2C1, I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED ) );

	while( i<6 )
	{
		if( I2C_GetFlagStatus( I2C1, I2C_FLAG_RXNE ) !=  RESET )
		{
			RxData[i] = I2C_ReceiveData( I2C1 );
			i++;
		}
	}

	printf( "RxData:\r\n" );
	for( i=0; i<6; i++ )
	{
		printf( "%02x\r\n", RxData[i] );
	}

#endif

	while(1);
}
